cashback sites worth it for car and house insurance?

I don't belong to cashback sites because I don't spend enough - but the insurances are coming due so it may be worth it. Each premium will be around £200 - so is it worth selling my data? And if so, to whom?

I don't know about selling your data but in the 6 or 7 years I've been with Quidco I've got around £800 in cashback. It really doesn't matter what the premium is, you still get the fixed amount back (unless it's a percentage one of course). I just did DH's motobike insurance through it. Premium was £57, cashback £40 - what's not to like? The trick is to remember to use it when you shop online as I often forget.

Oh forgot to say I don't make my decision based on how much cashback I can get. I'll do a price comparison thing then see if those giving the best prices are also giving cashback and decide from there. With the motorcycle insurance example I gave, that particular company were the cheapest, with the best cover and gave the most cashback but if I don't always go through a cashback site if I can get better and cheaper cover elsewhere.

my brother always uses cash back site's, mainly topcashback and he has had loads of money back. if you use a comparison site and buy through them you can end up paying more than if you go direct to the actual company's site, i get a quote then go to the cheapest company's site and get another quote, i usually get it down even more that way, last time it was £200 cheaper to go direct to the site for exactly same cover.

my brother always uses cash back site's, mainly topcashback and he has had loads of money back. if you use a comparison site and buy through them you can end up paying more than if you go direct to the actual company's site, i get a quote then go to the cheapest company's site and get another quote, i usually get it down even more that way, last time it was £200 cheaper to go direct to the site for exactly same cover.